Fixed typo

topics/dotfiles/index.md

@@ -7,6 +7,6 @@ short_description: Dotfiles are user-specific application configuration files.
 topic: dotfiles
 wikipedia_url: https://en.wikipedia.org/wiki/Hidden_file_and_hidden_directory#Unix_and_Unix-like_environments
 ---
-Legend goes, that dotfiles were invented when `ls` used to skip files and directories starting with a `.` (dot). As a result, files that begin with such a character were not shown when listing using `ls` — i.e. it was a "hidden" file. Since dotfiles are ususually user-specific, a predestined place for them is the `$HOME` directory.
+Legend goes, that dotfiles were invented when `ls` used to skip files and directories starting with a `.` (dot). As a result, files that begin with such a character were not shown when listing using `ls` — i.e. it was a "hidden" file. Since dotfiles are usually user-specific, a predestined place for them is the `$HOME` directory.
 
 Commonly used files are for example: `.bashrc`, `.zshrc` or `.vimrc`.